Clock



(No Model.)

H. HERWIG. I

CLOCK.

No. 396,655. Patented Jan. 22, 1889.

Wi'izawmgr w'yewz A? flrzmmn 1767a? UNITED STATES PATENT OEEieE.

HERMANN HERIYIG, OF MEDIA, PENNSYLVANIA.

CLOCK.

SPECIFICATION forming part of Letters Patent No. 896,655, dated January22, 1889.

Application filed October 12, 1888.

To all whom it may concern:

Be it known that I, HERMANN IIERWIG, a subject of the Emperor ofGermany, residing at Media, in the county of Delaware and State ofPennsylvania, have invented new and useful Improvements in Vatch andClock Movements, of which the following is a specification.

My invention relates to watch and clock movements, and the purposethereof is to provide a simple combination of parts whereby I may derivean increased power from a spring of moderate tension, and by means of anarrangement of parts whereby avery material economy of space and areduction of the number of mechanical elements is accomplished.

The invention consists in the several novel features of construction andnew combinations of parts, hereinafter fully set forth, and thendefinitely pointed out in the claims.

In the accompanying drawings, Figure is a side elevation of a watch orclock movement embodying my invention. Fig. 2 is a horizontal section ofFig. 1 in the plane :1 at. Fig. 3 is a similar section of Fig. l in theplane y 3 In the said drawings, the referencenumeral 1 denotes a shaftor arbor upon which is loosely mounted a barrel, 2, having an attachedgear, 3, and provided with a spring, 4, arranged in the barrel andconnected thereto at its outer end, the inner end being fastened to theshaft. Upon the same shaft, below or behind the gear 3, is looselymounted a wheel consisting of two gears, 5 and G, of different diameter,rigidly connected togetherby means of a neck or other attachment, '7.Upon the flat face of the longer gear, (3, is mounted a stud, 8, havingits axis parallel with the axis of the arbor 1. Upon this stud isjournaled a pinion, 9, meshing with the gear 3 on the barrel andcarrying a pinion, 10, which meshes with the gear 5. The upper end ofthe stud S is supported by a bracket, 12, mounted on the fiat face ofthe gear 6. The gear 6 meshes with a pinion, 13, on the shaft ll, saidshaft l-Ll carrying the minute-hand in the usual manner, and movement istransmitted to the other hand and to the seconds-hand, should one beemployed, by any known combination of gear Serial No. 287,898. (Nomodel.)

ing. The escapement also may be of any desired construction.

The operation of the parts described is as follows: The mainsprin g iswound by means of a key applied to the shaft 1 or by any desired form ofstem-winding mechanism. The tension of the spring exerted upon thebarrel 2 and its attached gear 3 produces revolution toward the right,as indicated in the drawings by arrows. This revolution being impartedto the pinions 9 and 10, meshing, respectively, wit-h the gears 3 and 5,rotation s imparted to said pinions f) and 10 upon their own axis, andat the same time a planetary motion is given to the pinions J and 11),whereby the gear (.3 is carried in the same direction of rotation as thebarrel 2 and gear :3, and this movement is imparted in turn to the wheel13 and shaft 14. The relative diameter of the gears may be varied ascircumstances require.

By this invention it will be seen that I provide a simple mechanism,occupying a comparatively limited space, in which the power of thespring is applied to the highest advantage. By the relative sizes ofgears shown and with the arrangement pointed out a spring of mediumstrength and winding with five turns of the shaft will operate themovement for seven or eight days, or very nearly so, and the entiremechanism may be ar ranged in a watch-case very little, if any, largerthan those ordinarily used.

ith the ordinary mainspring now used in watches running thirty hours Iam able to produce perfectly accurate operation extend ing over seven oreight days without rewinding.

The invention is applicable to clocks of all kinds as well as towatches.

lVhat I claim is 1. In a watch or clock movement, the combination, withan arbor, of a barrel carrying a rigidlyattached gear loosely mounted onsaid shaft or arbor, a wheel consisting of the gears rigidly connectedtogether and of un equal diameter loosely mounted on the same arbor, apinion journaled on a stud, project ing from the flat face of the largergear of said wheel, said pinion meshing with the gear carried by thebarrel and carrying a pinion which meshes with the smaller gear of thewheel, substantially as described.

2. In a Watch or eloek movement, the eo1nbination, with an arbor, of abarrel and a gear rigidly mounted on said barrel, both loosely mountedon the shaft 1, a Wheel composed of two unequal gears rigidly connectedtogether, a pinion mounted on a stud pro jeeting from the flat face ofthe longer gear, said pinion meshing with the gear carried by the barreland having rigidly attached a pinion meshing with the smaller gear ofthe wheel, a shaft having a pinion meshing with one of the gears of thewheel, and a coiled spring connecting the barrel to the arbor,substantially as described.

3. In a Watch or clock movement, the combination, With the arbor l, of abarrel, 2, carrying a rigidly-attached gear, 3, loosely mounted on saidarbor, a Wheel composed of two rigidly-connected unequal gears, 5 and 6,the latter being provided With a stud, 8, a pinion, 9, having arigidly-connected pinion, 10, journaled on said stud, the former meshingwith the gear 3 and the latter with the gear 5, a shaft, 14, having apinion, 13, and a spring, 4, connecting the barrel 2 and arbor 1,substantially as described.

In testimony whereof I have affixed my signature in presence of twowitnesses.

H. HERWIG.

\Vitnesses:

PERCY B. HILLs, JAMES A. RUTHERFORD.

